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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2015/02/20 15:20:11 UTC
[jira] [Updated] (LUCENE-6268) Replace doc values filters with
queries having approximations
[ https://issues.apache.org/jira/browse/LUCENE-6268?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand updated LUCENE-6268:
---------------------------------
Attachment: LUCENE-6268.patches
Here is a patch, it replaces:
- FieldValueFilter with FieldValueQuery
- DocValuesRangeFilter and DocTermsOrdRangeFilter with DocValuesRangeQuery
These new queries support two-phase iterators with an approximation which matches all documents between 0 and maxDoc-1.
The new queries do not have the "docsWithField instanceof BitSet" optimization anymore since the 5.0 doc-values format does not use bit sets for any of its docWithField implementations.
On 5.x we could just deprecate these filters.
> Replace doc values filters with queries having approximations
> -------------------------------------------------------------
>
> Key: LUCENE-6268
> URL: https://issues.apache.org/jira/browse/LUCENE-6268
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Fix For: 5.1
>
> Attachments: LUCENE-6268.patches
>
>
> We should use approximations in order to deal with queries/filters that have slow iterators such as doc-values based queries/filters.
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